Output the Equation of a Logistic Regression

[Leo Dromi]

Hello,

i have a short and simple question. Im running a logistic regression with 16 Variables and i want to create the equation of this regression model for my paper. Since its very costly to build it via Word or Excel i was wondering if there is any possibility to output the equation of my regression with Stata. I was checking out a lot of pages but i found nothing. So i would like to present my question to you. I appreciate every answer that could help me with my problem. Thank you in advance.

Best regards
Leo

[Clyde Schechter]

Here's a general approach. You may want to modify the appearance of the coefficients by a different format than %3.2f.

sysuse auto, clear

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local equation "log odds `e(depvar)' = "

matrix b = e(b)
local indvars: colnames b
display `"`indvars'"'

local equation `equation' `:display %3.2f =_b[_cons]'

local indvars: subinstr local indvars "_cons" ""

foreach i of local indvars {
    local equation `equation' " + `:display %3.2f =_b[`i']'*`i'"
}

display `"`equation'"'

This approach has substantial aesthetic limitations if you have factor variables among your predictors. Revising the code to deal with that would be a fairly major undertaking, and unless you are cranking out a very large number of equations, it would be easier to just hand-edit the output.

[Leo Dromi]

Hello Mr. Schechter,

awesome! Thank you very much for your fast response. It worked out very well!

Best regards
Leo

[Marcos Almeida]

You may also wish to check the user-written - equation - for that matter.